I have a 1999 xj, with auto trans, np-242 , axle ratio 3.55 that I will be towing a Jayco pop-up (dry weight 2,100 and wet is about 2,900 lbs) I would like to put a trans cooler for extra protection, So I was thinking a cooler rated at 2,500 lbs, is this a good size ?? What trans line should I put the trans cooler on ie the transmission in or out line ? Top or bottom line on the radiator?
What is the maximum weight I can tow in over drive?